[jira] [Created] (SOLR-15450) Create possibility to prefetch stored fields needed for FieldValueFeatures

["Tom Gilke (Jira)" <ji...@apache.org>]

Tom Gilke created SOLR-15450:
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             Summary: Create possibility to prefetch stored fields needed for FieldValueFeatures
                 Key: SOLR-15450
                 URL: https://issues.apache.org/jira/browse/SOLR-15450
             Project: Solr
          Issue Type: Sub-task
          Components: contrib - LTR
            Reporter: Tom Gilke


The idea for this optimization came up in SOLR-12697 .

The basic idea is to create a new type of {{FieldValueFeature}}. Named e.g. {{PrefetchingFieldValueFeature}}.

This {{PrefetchingFieldValueFeature}} will prefetch all the stored fields that itself and other {{PrefetchingFieldValueFeatures}} need, so that only one of these Features has to read the values from disk. The other ones can access them from the cache, which would improve the performance.

The {{PrefetchingFieldValueFeature}} would extend the {{FieldValueFeature}} so that the current behavior of the {{FieldValueFeature}} would not be affected.



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